Fuel Supply, Air Induction, and Emissions
Chapter #8
Engine Fuel
• Gasoline• NG/Propane• Diesel/Kerosene
– Storage– Additive– Cetane – Octane– Pros/Cons
• Fuel Tanks
• Fuel lines and fittings
• Fuel Filters
• Fuel Pumps• Mechanical vs. impulse
• Pressurized Fuel System - Fuel tank located below the level of carb…
• Ex: Outboard engines
• Vapor Return Fuel System– To combat vapor lock… use a carb with vapor
return line…– Figure 8-15, page 161
Air Induction Systems
• Air Filter Housings and Filters
• Air Cleaners an Air Filters– Oil-wetted Air Cleaner– Dry-Type Air Cleaner– Dual Element Air Cleaners
Crankcase Breathers
Mufflers
Emissions
Emissions Control Regulations
• The Beginning• CARB 1990• Phase 1 - 1995• Phase 2 - April 2000• Phase 3 – April 2007
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